added comments and removed unnecesary wait

Microcontrollers/Opdracht 2.2/main.c

@@ -0,0 +1,59 @@
+/*
+ * Opdracht 2.2.c
+ *
+ * Created: 10-2-2021 10:58:13
+ * Author : Sem
+ */ 
+#define F_CPU 10e6
+#include <avr/io.h>
+#include <util/delay.h>
+#include <avr/interrupt.h>
+
+void wait( int ms ) {
+	for (int i=0; i<ms; i++) {
+		_delay_ms( 1 );		// library function (max 30 ms at 8MHz)
+	}
+}
+
+ISR( INT1_vect ) {
+	if (PORTC == 0b10000000)
+	{
+		PORTC == 0b00000001;
+	} else {
+		PORTC = PORTC << 1;
+	}
+	
+	
+}
+
+ISR( INT2_vect ) {
+	if (PORTC == 0b00000001)
+	{
+		PORTC = 0b10000000;
+	}
+	PORTC = PORTC >> 1;
+}
+
+
+int main(void)
+{
+    /* Replace with your application code */
+	
+	// Init I/O
+	DDRD = 0xF0;			// PORTD (7:4) is output, (3:0) is input
+	DDRC = 0xFF;
+	
+	// Init Interrupt hardware
+	EICRA |= 0x2C;			// INT2 falling edge, INT1 rising edge
+	EIMSK |= 0x06;			// Enable INT2 & INT1
+	
+	PORTC = 0x01;
+	
+	sei();
+	
+    while (1) 
+    {
+		wait(500);
+    }
+}
+